ABC Corp operates in the highly competitive smartphone market. Several new entrants are constantly introducing innovative products, and customers have a wide range of choices. Suppliers are consolidated and have significant bargaining power. In this scenario, which force of Porter's Five Forces framework poses a significant threat to ABC Corp?

a$.$

Bargaining power of suppliers

b$.$

Threat of new entrants

c$.$

Threat of substitute products

d$.$

Bargaining power of buyers